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b Definition
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b
noun()the blood group whose red cells carry the B antigen
Synonyms: group b, type b,
b
noun()(physics) a unit of nuclear cross section; the effective circular area that one particle presents to another as a target for an encounter
Synonyms: barn,
b
noun()originally thought to be a single vitamin but now separated into several B vitamins
Synonyms: b-complex vitamin, b complex, b vitamin, vitamin b, vitamin b complex,
b
noun()aerobic rod-shaped spore-producing bacterium; often occurring in chainlike formations; found primarily in soil
Synonyms: bacillus,
b
noun()a trivalent metalloid element; occurs both in a hard black crystal and in the form of a yellow or brown powder
Synonyms: atomic number 5, boron,
b
noun()the 2nd letter of the Roman alphabet